Thank you for your answers.
Today it is very difficult to contact Telesys. I've only got the names of some of its members, but nothing more.
About the case of Capcom vs. Data East, I want to mention that I read about it and also about some other cases (such as Sega against EA, Fox Interactive and Radical Games, and another case in which EA sued Zynga). That's why I have the concern.
Anyway, my game will have no relationship with Ram It (that's why I will not even use a name that resembles it), except the use of the same basic mechanics. Moreover, I do not have access to the source code of Ram it, so I will write the source code of my game completely, create the designs, compose the music, etc. I would like to get something that brings new ideas, but without losing the essence.
I will wait for more answers to have a more generalized vision, but I greatly appreciate yours.